Caenaugochlora (Caenaugochlora) cyanella (Halictinae: Augochlorini), new species, is described and figured from females collected in northwestern Honduras. The new species, although belonging to the subgenus Caenaugochlora Michener, superficially resembles C. donnae Engel of the subgenus Ctenaugochlora Eickwort, both having a strong metallic blue coloration and distinctly tuberculate subpleural Signum. Caenaugochlora cyanella, however, lacks the densely pectinate inner metatibial spur, strongly and completely striate basal area of the propodeum, densely punctured integument, and other features of Ctenaugochlora species. The species is distinguished from its congeners and characters for its recognition provided.